Used primarily as an intermediate in organic synthesis, particularly in the production of pharmaceuticals. It plays a key role in the preparation of certain alpha-hydroxy nitriles and substituted phenylacetic acid derivatives. Commonly employed in the synthesis of analgesics and anti-inflammatory agents due to its ability to introduce functionalized aromatic side chains. Also utilized in the development of agrochemicals and fine chemicals where nitrile and ester functionalities are required for further transformation. Its reactivity allows for efficient carbon-chain extension in multi-step synthetic routes.